How to stop the PA120 SE fans from revving constantly?
That low-frequency humming during stealth sections was driving me insane; it completely killed the tension of the game. I realized the PA120 SE fans were hitting a frequency jump between 45-55℃, causing the RPM to bounce rapidly between 900 and 1300. My first instinct was to just slap on 'Silent Mode' in the BIOS, but the CPU temp spiked to 88-92℃ and the game started hitching during map loads—definitely not a viable trade-off. I decided to take manual control and forced the PWM duty cycle to a flat 48% for the 40-60℃ range, adding a 4-second temperature response delay to filter out those annoying spikes. Now, the RPM fluctuation is barely 40 RPM, and core temps stay stable at 74-78℃. I actually messed up the delay at first, making it too long and letting the CPU hit the thermal ceiling, but 4 seconds is the sweet spot. The noise dropped from 36dB to 28dB, and the case resonance is gone. Stress tests show the cooling is still solid, with memory temps sitting between 58-63℃.
